<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/vue/3.2.40/vue.global.js"></script>
</head>
<body>
    <div id="app">{{name}}</div>
</body>
</html>
<script>
const app = Vue.createApp({
    data() {
        return {
            name:'ming'
        }
    },
}).mount('#app')
</script>